Ameritron's legendary AL-80A kilowatt amplifier has been completely redesigned and extensively improved. The all New AL-80B kilowatt output desktop linear can double your average SSB power output with high-level RF processing using Ameritron's exclusive Dynamic ALC. You get cooler operation because the AL-80B's exclusive Instantaneous RF Bias completely turns off the 3-500ZG tube between words. It saves hundreds of watts wasted as heat.